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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
201

Wave optical simulations for x-ray nano-focusing optics / Wellenoptische Simulationen nanofokussierender Röntgen-Optiken

Osterhoff , Markus 15 December 2011 (has links)
Gekrümmte Röntgen-Multilagen-Spiegel fokussieren Synchrotron-Strahlung auf wenige zehn Nanometer große Strahlflecke. Die Propagation zweier Lichtwellen durch elliptisch geformte fokussierende Multilagen-Spiegel wird durch eine wellenoptische Theorie beschrieben; dieser analytische Ansatz wird numerisch integriert. Mit diesem Verfahren kann die Schichtstruktur für hohe Reflektivität und geringe Strahl-Aberrationen optimiert werden. Wir zeigen Simulationen aktueller und neu entwickelter Synchrotron-Strahlrohre. Die Grenzen der Theorie werden anhand von Modell-Parametern untersucht.Ein weiterer Teil dieser Arbeit beschäftigt sich mit partieller räumlicher Kohärenz, modelliert mit der Methode der stochastischen Superpositionen. Propagation und Filterung der Kohärenzeigenschaften eines Röntgenstrahls in einem Wellenleiter werden analytisch und numerisch untersucht. Das vorgestellte, anschauliche Modell soll die Entwicklung und Überprüfung neuer Algorithmen im Bereich der kohärenten Abbildung unterstützen. Wir vergleichen die Ergebnisse von Simulationen, die auch Realstruktureffekte berücksichtigen, mit experimentellen daten aus dem GINIX-Instrument am Kohärenz-Strahlrohr P10 an der PETRA III-Quelle am DESY.Diese Arbeit zeigt Ergebnisse aus einer Kollaboration zwischen der Georg-August-Universität Göttingen und der European Synchrotron Radiation Facility (ESRF) in Grenoble.
202

Možnosti využití současných poznatků v oblasti zrcadlových neuronů v psychologické praxi pro trénink empatie / The Possibilities of Utilisation of Current Knowledge in the Field of Mirror Neurons in Psychological Practice for Empathy Training

Poupětová, Veronika January 2017 (has links)
Mirror neurons are very specific nerve cells that are both motor and sensory in nature. Mirror neurons are a relatively new discovery first identified by a team of neurophysiologists at the University of Parma. These neurons were first observed in primates, and then later in humans in several regions of the cerebral cortex. A large amount of research on mirror neurons have shown that they play an important role in imitation, language acquisition and empathy. The theoretical part of this work summarizes what is currently known about mirror neurons. It emphasizes the relationship between mirror neurons, autism, empathy, and its training. This theoretical framework is followed by pilot research, which consists of two components: the quantitative part consisted of a questionnaire survey to ascertain the level of empathy of the participants using the Index of Interpersonal Reactivity. The participants were the parents of autistic children who were compared with a control group. A statistically significant difference in empathy levels between the two groups was not observed but there was a tendency for higher scoring in some questionnaire scales in experimental group The second part of this work is an analysis of observations of the interactions between parents and autistic children. Additionally, two...
203

Performance Characterization of Silicon-On-Insulator (SOI) Corner Turning and Multimode Interference Devices

Zheng, Qi January 2012 (has links)
Silicon-on-insulator (SOI) technology has become increasingly attractive because of the strong light confinement, which significantly reduces the footprint of the photonic components, and the possibility of monolithically integrating advanced photonic waveguide circuits with complex electronic circuits, which may reduce the cost of photonic integrated circuits by mass production. This thesis is dedicated to numerical simulation and experimental performance measurement of passive SOI waveguide devices. The thesis consists of two main parts. In the first part, SOI curved waveguide and corner turning mirror are studied. Propagation losses of the SOI waveguide devices are accurately measured using a Fabry-Perot interference method. Our measurements verify that the SOI corner turning mirror structures can not only significantly reduce the footprint size, but also reduce the access loss by replacing the curved sections in any SOI planar lightwave circuit systems. In the second part, an optical 90o hybrid based on 4 × 4 multimode interference (MMI) coupler is studied. Its quadrature phase behavior is verified by both numerical simulations and experimental measurements.
204

Zrcadlové srovnání českých a německých statistik vzájemného obchodu / The mirror comparison of Czech and German statistics of mutual trade

Heczková, Markéta January 2012 (has links)
The final thesis is aimed at mirror comparison of mutual trade between the Czech Republic and Germany. On the basis of the comparison of Czech and German methodologies of foreign trade and consequential analysis of their mirror comparison focused especially on effect of the Czech Republic's accession to the EU (access effect) were individual abnormalities affecting mirror comparison identified and described. There were several solutions put forward so that already detected abnormalities could be effectively dissolved, moreover their figure in mirror comparison could be eliminated and data acquired from the comparison would reach as high level of credibility as possible. The Single flow and Qualified single flow systems are described and discussed in relation to mirror comparison because they are possible and already existing plans for simplification of Intrastat.
205

A Study of Networking Performance in a Multi-user VR Environment : Using Unity and the Mirror library

Lindblom, Andreas January 2020 (has links)
Virtual Reality provides the ability to immerse users in realistic environments, which makes it possible to utilize the technology as an educational tool. The EIT Raw Materials Project MireBooks intend to teach mining students by simulating a VR mine and recreating learning experiences in it. With this comes challenges with regards to the networking performance and user experience. / MiReBooks
206

Espelhos negros : signos da escatologia na literatura machadiana e na série Black Mirror /

Perassoli Júnior, Claudio Roberto January 2019 (has links)
Orientador: Gabriela Kvacek Betella / Resumo: A presente tese apresenta uma análise comparada entre signos escatológicos, ou seja, relativos à morte, presentes nos contos de Machado de Assis e nos episódios da série televisiva Black Mirror. Amparado pelos preceitos conceituais da Semiótica Interpretativa e pelo modelo metodológico enciclopédico-cognitivo de Umberto Eco, este trabalho apresenta, a princípio, uma discussão teórica realizando um recorte crítico sobre o autor brasileiro e sobre a tipologia das narrativas seriadas audiovisuais contemporâneas, a fim de respaldar o traquejo analítico empreendido. A proposta central desta pesquisa é confrontar processos de elaboração sígnica os quais envolvam questões tanatológicas em oito narrativas: Nosedive e O Espelho, White Bear e A Causa Secreta, San Junipero e A Segunda Vida, e Be Right Back e Um Esqueleto, do programa britânico e da literatura machadiana, respectivamente. Tal labor reflexivo reconhece a inserção dessas produções em um continuum sígnico, situando-as como expressões das mentalidades de seus tempos em vias escatológicas. Para concatenar tais percepções, esta tese forja o pensamento enciclopédico esboçado pelo semioticista italiano, lançando-se na escavação das representações da morte, do paraíso e as atitudes humanas diante do esgotamento da vida desde a Antiguidade Clássica até os dias atuais, por vieses históricos, culturais e sociais, permitindo que se crie um panorama-arcabouço acerca desses signos no decorrer dos tempos e suas ressonâncias. Por fim, a ... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: This thesis presents a comparative analysis between eschatological signs, that is, concerning death, present in Machado de Assis' short stories and in the episodes of the Black Mirror television series. Supported by the theoretical precepts of Umberto Eco's Interpretive Semiotics and encyclopedic-cognitive methodological model, this work introduces an academic discussion, making a critical cut about the brazilian author and the contemporary audiovisual serial narratives typology, to support the analytical approach undertaken. This research main purpose is to confront sign elaboration processes that involve tanatological questions at eight narratives: Nosedive and The Mirror, White Bear and The Secret Cause, San Junipero and The Second Life, and Be Right Back and A Skeleton, from the british program and Machado's literature, respectively. Such reflexive work recognizes the insertion of these productions in a signic continuum, situating them as expressions of their times mentalities in eschatological ways. To concatenate these perceptions, this thesis forges the encyclopedic thinking outlined by the Italian semioticist, launching into the excavation of death, paradise and human attitudes towards the exhaustion of life representations from classical antiquity to the present day, by historical biases, cultural and social aspects, allowing a framework to be created about these signs over time and their resonances. Finally, comparative analysis handles semiosis arranged in differen... (Complete abstract click electronic access below) / Astratto: Questa tesi presenta un’analisi comparativa tra segni escatologici, cioè riguardi alla morte, presenti nei racconti di Machado de Assis e negli episodi della serie televisiva Black Mirror. Supportato dai precetti concettuali della Semiotica Interpretativa e dal modello metodologico enciclopedi-cognitivo di Umberto Eco, questo lavoro presenta, all’inizio, una discussione teorica, da un ritaglio critico sull’autore brasiliano e sulla tipologia delle narrazioni seriali audiovisive contemporanee, al fine di sostenere l’approcio analitico adottato. Lo scopo principale di questa ricerca è quello di affrontare i processi di elaborazione dei segni che coinvolgono domande tanatalogiche in otto narrazioni: Nosedive e Lo Specchio, White Bear e La Causa Segreta, San Junipero e La Seconda Vita, e Be Right Back and Lo Scheletro, del programma britannico e della letteratura di Machado rispettivi. Questo lavoro riflessivo riconosce l’inserimento di queste produzioni in un continuum signico, prendendole come espressioni delle mentalità dei loro tempi in vie escatologiche. Per concatenare queste percezioni, la presente tesi forgia il pensiero enciclopedico delineato dal semioticista italiano, a scavare delle rappresentazioni di morte, paradiso e atteggiamenti umani di fronte al esaurimento della vita dall’antichità classica ai giorni attuali, da vie storici, culturali e sociali, creando un quadro su questi segni nei tempi e le loro risonanze. Infine, l’analisi comparativa gestisce semiosi disp / Doutor
207

Mirror symmetry of nonabelian Landau-Ginzburg orbifolds with loop type potentials / ループ型ポテンシャルの非可換 Landau-Ginzburg オービフォルドのミラー対称性について

Mukai, Daichi 23 March 2020 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第22233号 / 理博第4547号 / 新制||理||1653(附属図書館) / 京都大学大学院理学研究科数学・数理解析専攻 / (主査)准教授 河合 俊哉, 教授 大槻 知忠, 教授 入谷 寛 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DFAM
208

Výpočtové modelování aerodynamického hluku způsobeného bočním zrcátkem automobilu / Computational modelling of aerodynamic noise caused by the car’s side mirror

Vobejda, Radek January 2019 (has links)
The master’sthesis deals with numerical modelling of aerodynamic noisewhich arisesinside of the carcabin. In the first part ofthe thesis simplified model of geometry of the car and of the inside acoustic pressure arecreated. After that numerical analysis of created models of geometry are doneandvarious models of turbulenceare discussed. The results of these CFD simulationswhere then used for changing the model of geometry of the wing mirror. Outputs of these simulations were used for solving the numerical analysis of noise in the car cabin.
209

Návrh mobilní aplikace Yourcut a její nasazení / Design of the Yourcut Mobile Application and its Deployment

Kallab, Karel January 2021 (has links)
The master's thesis focuses on the creation of the Yourcut application for streamlining the services of barbering. The main goal of this work is to create an application and deploy it in a smart mirror, built directly to the needs of the application. The whole work can be divided into three parts. In the first part, the reader gets acquainted with all the technological prerequisites that need to be known in order to understand the whole work. The second part describes and analyzes. It summarizes the problems associated with creating an application and all the technical and technological prerequisites for the application to be created correctly. In the last part there is a description of the application creating, along with the construction of a smart mirror and their deployment.
210

Neurodidactics in elementary music classrooms: a mixed-methods study

Leahy, Sarah Elaine-Alexandra 23 September 2021 (has links)
Up until recent technological developments in neuroscience and advancements in brain imagery techniques, educators and scientists had little insight into what was occurring in the minds of learners. These developments in the field of neuroscience have led to increased knowledge about how the brain develops and learns in childhood. Understanding how music is processed in the brains of young children may provide educators with insights about how to teach more efficiently and effectively, with the potential to either support or refute current classroom practices. Many music educators appear eager to bring strategies with a grounding in neuroscience to their classrooms. It is important then, to understand not only the limits of neuroscientific data and its applicability to classroom settings, but also the degree to which current music teaching practices either correspond or run contrary to current understandings in neuroscience. The purpose of this study is to explore the use of neuroscience recommendations by teachers in elementary general music classrooms; that is, whether current classroom practices correspond with the latest understandings of the developing brain as well as how and to what degree these recommendations for music teaching based on neuroscience are reflected in elementary general music pedagogy.

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